Sodium Oleyl Methyl Isethionate
AKA “SOMI, Oleic Acid Surfactant
Synthetic
Ingredient Facts
Sodium oleyl methyl isethionate
AKA: SOMI, Oleic Acid Surfactant
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Synthetic
Clean
A gentle cleanser that removes oil and dirt while creating a light, airy lather. Works to keep skin feeling fresh and clean.
CAS #
880353-25-3
Form
Liquid
See origin →
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Foam Boosting
Surfactant Foam Boosting
Anti-Inflammatory
Antimicrobial
Fights Acne
Removes dirt and impurities
Enhances lather
Traditional Use
Developed in the late 20th century as a mild synthetic surfactant. Created to provide gentle cleansing suitable for sensitive skin and personal care formulations.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Potential Sensitizer
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR